Today's Message Index:
----------------------
1. 04:31 AM - Re: 91 Octane Mogas (Thom Riddle)
2. 07:01 AM - Re: Re: 91 Octane Mogas (Bob Brennan)
3. 08:47 AM - Re: Re: 91 Octane Mogas (Noel Loveys)
4. 10:29 AM - Throttle springs (Jim Feldmann)
5. 10:46 AM - Re: Throttle springs (Robert Borger)
6. 01:18 PM - Color in Coolant (Jeffrey A Beachy)
7. 01:44 PM - Re: Color in Coolant (C David Estapa)
8. 03:41 PM - Re: Throttle springs (Jim Feldmann)
9. 03:46 PM - Re: Throttle springs (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
10. 03:58 PM - Re: Re: Throttle springs (Dave)
11. 04:02 PM - Re: Re: Throttle springs (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
12. 04:12 PM - Re: Throttle springs (Jim Feldmann)
13. 05:24 PM - Re: Re: Throttle springs (LarryMcFarland)
14. 05:41 PM - Authorized Rotax repairman (cristalclear13)
15. 05:49 PM - Re: Authorized Rotax repairman (Bob Comperini)
16. 06:01 PM - Re: Authorized Rotax repairman (cristalclear13)
17. 06:03 PM - Another throttle spring problem. (Jim Feldmann)
18. 08:42 PM - Re: Throttle springs (Roger Lee)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 91 Octane Mogas |
We recently acquired a RANS S6S w/ 912UL with about 650 hours TTAE. It has been
run primarily (at least 65-70%) on 100LL. I am told by the previous owner that
its oil and filter were changed at 25 hour intervals per Rotax spec. using Pennzoil
Motorcyle Oil and have no reason to believe otherwise. Yet, we were a
little concerned about the gearbox so did the Rotax gearbox inspection SB last
week. We found the gearbox clean with no lead deposits whatsoever. The springs,
which do wear with use, were still well within service limits. The gear meash
areas showed where the gears were in contact with each other but no measurable
wear, all perfectly normal. The spring wear was a little more than the previous
gearbox inspection we did on an airplane with about the same time but primarily
run on mogas. The difference was minor.
Bottom line, I would not worry the least about running 100LL when necessary as
long as you conform to Rotax's recommendations for oil type, use Rotax oil filters
and change oil/filter per their maintenance intervals.
--------
Thom Riddle
CFI-SP
Power Plant Mechanic
N1208P RANS S6S, Tailwheel, 912UL
N197BG FS1/447
--------------------
Scratch any cynic, he said, and youll find a disappointed idealist.
George Carlin
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7863#207863
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 91 Octane Mogas |
>From what I have read on this list you use additives to 100LL so that the
lead does not build up in the oil sump(?) or on valves. Does the same thing
apply to the 2 stroke 582UL which has no oil sump?
Bob Brennan - N717GB
1991 UK Model 2 ELSA Kitfox
Rotax 582 with 3 blade prop
Wrightsville Pa
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Roger Lee
Sent: 07 October 2008 10:39 pm
Subject: RotaxEngines-List: Re: 91 Octane Mogas
While 91 octane is best, using 100LL the little that we usually travel is
not that terrible. I would recommend getting some Decalin (Aircraft
Spruce)(use .5oz. per 10 gals) and that will greatly help with the
occasional use of 100LL.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7854#207854
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 91 Octane Mogas |
I agree if you are using a four stroke engine.
For TCP to work it must be burned. I will not protect a two stroke engine
from lead plating on the main bearings. It will keep the combustion chamber
cleaner.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Roger Lee
Sent: Wednesday, October 08, 2008 12:09 AM
Subject: RotaxEngines-List: Re: 91 Octane Mogas
While 91 octane is best, using 100LL the little that we usually travel is
not that terrible. I would recommend getting some Decalin (Aircraft
Spruce)(use .5oz. per 10 gals) and that will greatly help with the
occasional use of 100LL.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7854#207854
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Throttle springs |
Hi:
I'm new here, having just purchased a Kitfox IV Speedster with a Rotax 912UL.
The throttle springs are set to open the throttle in the event of a linkage failure.
OK, but the springs are so strong that they pull the cable right past the
ratchet in a vernier throttle. I'm using a collet type throttle, but as soon
as I loosen the collet, the springs try to pull the throttle out of my hand.
Is there a lighter spring available? What have you done and where did you get
the springs?
Jim Feldmann
Kitfox IV Speedster
912UL N629JB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7924#207924
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Throttle springs |
Jim,
I don't have a Kitfox (darn nice airplanes, BTW), I have a Europa. But, I'd replace
the throttle linkage system before I'd replace the throttle springs. Find
a throttle handle/linkage with adjustable friction.
Just my 2 cents. I'm sure there will be opposing suggestions.
Bob Borger
Europa XS Monowheel, Standard Wings, Intercooled Rotax 914, Airmaster C/S prop.
99.9% complete. Chasing gremlins in the audio panel wiring.
http://www.europaowners.org/N914XL
On Wednesday, October 08, 2008, at 12:29PM, "Jim Feldmann" <feldesign@earthlink.net>
wrote:
>
>Hi:
>
>I'm new here, having just purchased a Kitfox IV Speedster with a Rotax 912UL.
>
>The throttle springs are set to open the throttle in the event of a linkage failure.
OK, but the springs are so strong that they pull the cable right past
the ratchet in a vernier throttle. I'm using a collet type throttle, but as soon
as I loosen the collet, the springs try to pull the throttle out of my hand.
>
>Is there a lighter spring available? What have you done and where did you get
the springs?
>
>Jim Feldmann
>Kitfox IV Speedster
>912UL N629JB
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p 7924#207924
>
>
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Color in Coolant |
I use Evans coolant in my Rotax 912ULS and have from initial fill. My
engine has 168 hours on it since first start last December. I noticed
today that my Evans coolant is darker than it was initially. In the jug,
Evans is nearly clear, but now it has a definite brownish tint. Is this
cause for concern? My engine runs nicely and the temps are always within
the green arcs. I change oil every 50 hours. I started with Mobil 1 but
at last oil fill started using Aeroshell Sport Plus 4.
Jeff Beachy
____________________________________________________________
Fashion Design Education - Click Here!
http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3oIaxuEVOV2t1kL6wspspncalXQOZeYAfT9fQZMTzKmY1DDn/
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Color in Coolant |
Jeff'
I had the same concerns. I read the Evans paper work and it says this is
normal. It will eventually turn dark brown.
David Estapa
Woodstock, Georgia
N97DE S5TD 912ULS
On Wed, 8 Oct 2008 16:16:00 -0400 Jeffrey A Beachy <beachyjeff@juno.com>
writes:
> <beachyjeff@juno.com>
>
> I use Evans coolant in my Rotax 912ULS and have from initial fill.
> My
> engine has 168 hours on it since first start last December. I
> noticed
> today that my Evans coolant is darker than it was initially. In the
> jug,
> Evans is nearly clear, but now it has a definite brownish tint. Is
> this
> cause for concern? My engine runs nicely and the temps are always
> within
> the green arcs. I change oil every 50 hours. I started with Mobil 1
> but
> at last oil fill started using Aeroshell Sport Plus 4.
>
> Jeff Beachy
> ____________________________________________________________
> Fashion Design Education - Click Here!
>
http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3oIaxuEVOV2t1kL6wspspnc
alXQOZeYAfT9fQZMTzKmY1DDn/
>
>
>
>
>
>
____________________________________________________________
Get the shot you need with a discreet new spy camera. Click now!
http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3m1ErH2owiGbF5bUwjl5CR33SfHGzNRMvoNuFgcNYIq2FVTf/
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Throttle springs |
Just got back from the hanger and I took a picture of the linkage I am talking
about. It seems like that is an awful lot of spring just to open the throttle
in case of a linkage failure. Not sure I would like to see what happens if the
linkage only fails on one side either.
The main problems though are the difficulty in holding a specific throttle setting
during approach, and the fact that the throttle creeps open during cruise.
Jim
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7971#207971
Attachments:
http://forums.matronics.com//files/dscf1265_121.jpg
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Throttle springs |
Hello Jim.
I am flying a Zenith 701 with the same engine. Please never change the
springs in the carb linkage. It could lead to a major engine power
loss in a situation when you really need the fast reaction from the
carbs.
This accident is the direct cause to the change of throttle linkage
springs. See the link.
http://www.ch601.org/stories/croke_crash.htm
I am using a Vernier throttle cable in my plane with friction lock.
It works great and I never have any problems with the spring wanting
to pull the throttle lever in. I even have another on the right side
but always make sure that the friction lock on that side is loose.
Hope this helps in your decision making.
Best regards,
Johann G.
> >
>
> Hi:
>
> I'm new here, having just purchased a Kitfox IV Speedster with a
> Rotax 912UL.
>
> The throttle springs are set to open the throttle in the event of a
> linkage failure. OK, but the springs are so strong that they pull
> the cable right past the ratchet in a vernier throttle. I'm using a
> collet type throttle, but as soon as I loosen the collet, the
> springs try to pull the throttle out of my hand.
>
> Is there a lighter spring available? What have you done and where
> did you get the springs?
>
> Jim Feldmann
> Kitfox IV Speedster
> 912UL N629JB
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p 7924#207924
>
>
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Throttle springs |
Search the Zenith archives for Jon Croke...changing those springs cost him
his 701! Need I say more?
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com]On Behalf Of Jim
Feldmann
Sent: Wednesday, October 08, 2008 5:41 PM
Subject: RotaxEngines-List: Re: Throttle springs
<feldesign@earthlink.net>
Just got back from the hanger and I took a picture of the linkage I am
talking about. It seems like that is an awful lot of spring just to open the
throttle in case of a linkage failure. Not sure I would like to see what
happens if the linkage only fails on one side either.
The main problems though are the difficulty in holding a specific throttle
setting during approach, and the fact that the throttle creeps open during
cruise.
Jim
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7971#207971
Attachments:
http://forums.matronics.com//files/dscf1265_121.jpg
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Throttle springs |
Hello Jim.
I just looked at the spring in your throttle linkage and it looks to
me that this is not the original Rotax part. I would order new springs
from a Rotax dealer and see if that does not change the situation.
They look more bulk than the original and also the ones I am using
have a long straight neck on one end. Take a look.
Top left of photo. Hope you can see the long straight end of the spring.
Regards,
Johann G.
008, at 10:40 PM, Jim Feldmann wrote:
> >
>
> Just got back from the hanger and I took a picture of the linkage I
> am talking about. It seems like that is an awful lot of spring just
> to open the throttle in case of a linkage failure. Not sure I would
> like to see what happens if the linkage only fails on one side either.
>
> The main problems though are the difficulty in holding a specific
> throttle setting during approach, and the fact that the throttle
> creeps open during cruise.
>
> Jim
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p 7971#207971
>
>
> Attachments:
>
> http://forums.matronics.com//files/dscf1265_121.jpg
>
>
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Throttle springs |
Thanks guys. I went to the Croke 701crash posting, and it appears that his original
springs have a long end also. So it looks like mine have been replaced.
I will contact Rotax.
Jim
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7976#207976
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Throttle springs |
Jim,
The spring throttle combination is not a good one. I recommend you
remove the springs, find a linkage to tie the two carbs together and go
with a solid
wire as do the regular aircraft manufacturer's products. It takes a bit
of thought, but it does work. I did this in my Subaru with two Bings
and I've had no
problems with the system. Pulling out the cable and replacing it with a
1/16th diameter music wire in the cable casing is the beginning and it
will not bend
in the length of free throw the Bing carb linkage requires, especially
without the springs. See links
http://www.macsmachine.com/images/controllinkages/full/throttlewire.gif
http://www.macsmachine.com/images/controllinkages/full/abinghardcablelink.gif
http://www.macsmachine.com/images/controllinkages/full/throttlelink.gif
Realizing the Rotax doesn't have much if any direct access for linkage
between the carbs, but the person that solves that problem will have
solved a serious
deficiency in the current design.
Best regards,
Larry McFarland 601HDS at www.macsmachine.com
Jim Feldmann wrote:
>
> Just got back from the hanger and I took a picture of the linkage I am talking
about. It seems like that is an awful lot of spring just to open the throttle
in case of a linkage failure. Not sure I would like to see what happens if the
linkage only fails on one side either.
>
> The main problems though are the difficulty in holding a specific throttle setting
during approach, and the fact that the throttle creeps open during cruise.
>
> Jim
>
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Authorized Rotax repairman |
Is it possible to find an authorized Rotax repairman who will come to my hanger?
If so, how do I go about finding one? Anyone got a link (or number)?
--------
Cristal Waters
Mark II Twinstar
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7985#207985
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Authorized Rotax repairman |
>
>Is it possible to find an authorized Rotax repairman who will come to my hanger?
>If so, how do I go about finding one? Anyone got a link (or number)?
http://www.rotaxflyingclub.com/global/repaircentre.htm
--
Bob Comperini
e-mail: bob@fly-ul.com
WWW: http://www.fly-ul.com
Message 16
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Authorized Rotax repairman |
bob(at)fly-ul.com wrote:
>
> >
> > Is it possible to find an authorized Rotax repairman who will come to my hanger?
> > If so, how do I go about finding one? Anyone got a link (or number)?
> >
> >
>
> http://www.rotaxflyingclub.com/global/repaircentre.htm
>
>
> --
> Bob Comperini
> e-mail: bob@fly-ul.com
> WWW: http://www.fly-ul.com
Thank you so much Bob. The one listed at Hartsfield GA isn't very far from here.
I'll give them a call.
Thanks!
--------
Cristal Waters
Kolb Mark II Twinstar
Rotax 503 DCSI
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7993#207993
Message 17
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Another throttle spring problem. |
Larry Huntley asked me to post this for him, since he is having trouble posting.
(I can sympathize.)
Jim
Hi Folks,
I have a different problem with a throttle spring. I am working on a Kitfox 2 (N815TL)
with a 582 Rotax and 2 Bing carburetors.The aircraft has over 500 hours
and is on at least its third owner. He wants to learn to fly on his bird,so
I am concerned about getting everything right. I am familiar with Kitfox . I
built a 4-1200 / Soob on which I have 500hrs.
On the model 2 the spring(s) is quite strong and pulls to CLOSE the throttle. In
case of a failure of the throttle cable, it seems that it would shut the engine
down. Is this the normal situation for this aircraft? I know absolutely nothing
about Rotax engines so any help will be beneficial. This plane has a vernier
throttle( which I don't care for) and the spring is strong enough to make
the vernier difficult to manage. I have flown the plane only once. It seems to
be a fine aircraft.
The other problem with this model 2 is the elevator. It is in the bottom of two
holes at the leading edge. In flight the stick is much farther forward than in
any other aircraft I have flown. If you line up the elevator and the horizontal
stabilizer on the ground,this stick is in what feels like a more normal position.
This means that in flight the elevator must be well into the down position.
The owner says the seller had taken him for a ride in the plane,so he must
have been flying it like this. Don't know how many of the 500 hours he put
on it.
Sorry to be so long-winded,but wanted to give enough info to be able to get some
logical responses.
Thank you for any help.
Larry Huntley - KF 4-1200 - Soob
EA81 -AMAX redrive - Warp Drive prop N234EE 506 HRS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 7994#207994
Message 18
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Throttle springs |
Hi Jim,
Those are not Rotax springs. Order some new carb linkage springs and enricher /choke
springs. The new springs are lighter than what you have. Don't get caught
up in the good ol'e boy way of fixing your engine. There is a reason and usually
a very well tested reason that Rotax does things a certain way. You thought
enough to buy a plane and you want it to keep you in the air without facing
any problems now or down the road. Maintain it with the same fore thought.
The push / pull type of throttle will work. Just make sure you use the correct
wire and throttle.
Enjoy your plane and your flights.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 8019#208019
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|